Harper, W. R., Gallup, F. A., & Cicero, M. T. (1929). Orations of Cicero, with a selection from his letters (Revised edition.). Ginn and Company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Harper, William R., Frank A. Gallup, و Marcus Tullius Cicero. Orations of Cicero, with a Selection from His Letters. Revised edition. Boston: Ginn and Company, 1929.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Harper, William R., et al. Orations of Cicero, with a Selection from His Letters. Revised edition. Ginn and Company, 1929.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.